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SQL Server-XML-Lesson 8-Grouping sets and triggers | SQL courses

In this video, we discuss grouping sets and triggers.

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Title: SQL Server-XML-Lesson 8-Grouping sets and triggers

Duration:  19 minutes

Summary: In this video, we discuss grouping sets and triggers. First, we start with Grouping sets to group the ProductId, and SpecialOfferId in the Sales.SalesOrderDetail table. We saw how we can use the () to show the total sum. Then, we added the having clause with the Grouping_Id  to control whether to display/hide the total sum. Finally, we moved to triggers. Triggers are automatically called when a certain event happens. In this case, we tried to handle the ‘After Update” event on the Customers table. When we update the Customers first name, the trigger will fire and the ModifiedBy field is updated by the trigger. When using trigger, we automatically have access to the Inserted and Deleted tables to control what has been inserted and deleted from the target table.

Methodology of the development of example: Good coding standard and simplified design to illustrate the key points.

Technology Used: SQL Server 2008.

Keywords: table, database, primary key,  Grouping sets, Grouping_Id, trigger, after update, varchar.



Senior Software Engineer with experience in C#, JavaScript, jQuery, Knockout JS, Kendo UI, HTML5, and SQL Server. Ayad has more than 20 years experience in technical training and teaching. Contributor to MrBool for about 7 years.

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